WBPWD/AE/KMCHSD/NIT09e/26-27/1

Cleaning the sand stone surface and removing dirt, dust, bird dropping, grease, oil, algae, fungus, monkey beats, vegetable growth etc., including providing, applying and washing the surface with liquid Ammonia Chemical of 5% solution and other chemical cleaning agent as approved by Archaeological Survey of India/ Engineer-in-charge, of approved brand and manufacturer, with the help of required scrubbers and also cleaning with machine operated water jet mixed with desired quantity of fine silica where ever required, without causing any scratching/ damage to the stone surface and finally washing the surface with clean water with the help of pressure jet machine, complete in all respect, including taking all precautions to safeguard ventilators, windows, doors etc. by suitable covering so as to avoid any damage to the building/structure, all as per direction of Engineer-in-charge (The rate is inclusive of all materials & labours involved except scaffolding).

Disposal of building rubbish / malba / similar unserviceable, dismantled or waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge, beyond 50 m initial lead, for all leads including all lifts involved.

Sub Total

Modified estimated Cost after using correction factor on DSR 2023 on account of GST @ 0.973 as per O.M. issued by DG, CPWD vide no 158/se/(tas)/gst/2024/02 DATED 08.08.2024

Add enhancement for Cost Index @23% (For Kolkata) on DSR-2023 item vide office memorandum no - 34(1)/SDG/(KOL)/Cost Index/2026/915 dt. 19.05.2026 of EE(P)€,SDG(Kolkata), CPWD